Danfoss VLT AutomationDrive FC 360 Quick Manual page 23

Installation
Terminal Parameter
8-3* parameter
68 (+)
group
8-3* parameter
69 (-)
group
Relays
01, 02, 03 5-40 [0]
04, 05, 06 5-40 [1]
Table 4.2 Terminal Descriptions
Control terminal functions
Frequency converter functions are commanded by
receiving control input signals.
•
Programme each terminal for the function it
supports in the parameters associated with that
terminal.
•
Confirm that the control terminal is programmed
for the correct function. See chapter 5 Local
Control Panel and Programming for details on
accessing parameters and programming.
•
The default terminal programming initiates
frequency converter functioning in a typical
operational mode.
Using screened control cables
The preferred method in most cases is to secure control
and serial communication cables with screening clamps
provided at both ends to ensure the best possible high
frequency cable contact.
If the ground potential between the frequency converter
and the PLC is different, electric noise could disturb the
entire system. Solve this problem by fitting an equalising
cable as close as possible to the control cable. Minimum
2
cable cross-section: 16 mm (6 AWG).
MG06A602
Quick Guide
Default
Description
setting
RS485 interface.
A control card
switch is
provided for
termination
resistance.
Form C relay
output. These
relays are in
[0] No
various locations
operation
depending upon
the frequency
converter config-
uration and size.
Usable for AC or
DC voltage and
resistive or
inductive loads.
[0] No
RO2 in J1–J3
operation
enclosure is 2-
pole, only
terminals 04 and
05 are available
Danfoss A/S © 04/2015 All rights reserved.
PLC
PE
PE
1
2
1 2
Minimum 16 mm (6 AWG)
2 Equalising cable
Illustration 4.8 Screening Clamps at Both Ends
50/60 Hz ground loops
With long control cables, ground loops could occur. To
eliminate ground loops, connect 1 end of the screen-to-
ground with a 100 nF capacitor (keeping leads short).
PLC
PE
100nF
Illustration 4.9 Connection with a 100 nF Capacitor
Avoid EMC noise on serial communication
This terminal is connected to ground via an internal RC
link. Use twisted-pair cables to reduce interference
between conductors. The recommended method is shown
in Illustration 4.10.
FC
69
68
61
PE
PE
2
1
Minimum 16 mm 2 (6 AWG)
2 Equalising cable
Illustration 4.10 Twisted-pair Cables
Alternatively, the connection to terminal 61 can be
omitted.
FC
69
68
PE
PE
1
2
1
Minimum 16 mm 2 (6 AWG)
2 Equalising cable
Illustration 4.11 Twisted-pair Cables without Terminal 61
FC
PE <10 mm
PE
FC
PE <10 mm
FC
69
68
61
PE
<10 mm
PE
1
FC
68
69
PE
<10 mm
PE
21
4 4